Why Won't My Baby Sleep? Sleep Pressure, Associations and Choosing a Method

The approach

Dubief writes as a practical troubleshooter rather than a guru with one method. Her view: most baby sleep problems come from a few mechanics - timing, how the baby falls asleep, and the setting - and once you understand those you can choose whatever approach fits your family. The tone is humorous and reassuring.

Safe sleep comes first

Whatever method you choose, Cradle follows the AAP's safe sleep recommendations: every sleep on the back, alone, on a flat, firm surface with only a fitted sheet - no pillows, bumpers, loose blankets or soft toys, and no inclined or weighted products. The AAP recommends sharing a room (not a bed) for at least the first 6 months. No sleep-training step changes this. See the safe sleep guide.

Sleep pressure and timing

• Sleepiness builds the longer a baby is awake. Too little awake time and they fight sleep; too much and they become overtired, which can make falling and staying asleep harder.
• Awake time stretches as babies grow, from very short stretches in the early weeks to a few hours by the end of the first year. Watch your baby, not just a chart (see the sleep by age table).
• A consistent wake-up time anchors the day; many babies do well with a fairly early bedtime.
• Short naps and early-morning wakings often trace back to timing that's a bit off.

Sleep associations

• Babies tend to want the same conditions to get back to sleep at night that they had when they fell asleep at bedtime: being fed, rocked, bounced or held.
• Associations are normal and not a problem in themselves. They become a problem when the family can no longer keep up, such as a baby who needs rocking back to sleep every hour.
• The usual fix is helping the baby practice falling asleep in the crib or bassinet at bedtime, then the skill tends to carry into the night.
• Helpful associations a baby can keep all night include a dark room, steady white noise (kept quiet and away from the crib) and a wearable blanket or sleep sack that is not weighted.

Choose your method

She lays out a range: gradual, low-crying approaches (slowly fading your help, or sitting near the crib and moving away over several nights), timed check-ins, and full extinction. Her advice is to pick one that you can apply consistently, because inconsistency tends to mean more crying overall. Most formal sleep training is aimed at about 4-6 months and up; check with your pediatrician first. For a side-by-side view of approaches, see the sleep approaches compared guide.

Common troubleshooting points

• The 4-month change in sleep is real and normal (see the four-month sleep regression guide).
• Rule out hunger, illness, teething pain or a too-warm room before changing your approach.
• Change one thing at a time and give it about a week before judging.
• Night feeds: whether a baby still needs them depends on age and growth; ask at the checkup.

Where it fits and where it's debated

• Strengths: clear explanations of the why, practical fixes, a lot of humor, and no shaming of any method. Useful for parents who want to understand the problem before choosing a plan.
• Critiques: the book is open to sleep training, which some families don't want; parents who prefer fully responsive settling, or come from cultures where babies sleep close to adults, may find it less aligned with their values (room-sharing keeps a baby close while staying within safe sleep advice). The timing guidance is based on experience and common practice more than research, and a troubleshooting mindset can make normal baby waking feel like a problem to fix.
• Who it suits: tired parents and caregivers of babies roughly 3-18 months, shift workers and families with two homes who need a plan everyone can follow.

When to check in

• Mention it at the next checkup if your baby snores loudly most nights, seems to pause or gasp during sleep, or isn't gaining weight well.
• Bring it up if sleep loss is affecting your own mood; see the postpartum depression guide.